@media screen and (min-width: 320px) {
  html {
    font-size: 32px;
  }
}
@media screen and (min-width: 360px) {
  html {
    font-size: 36px;
  }
}
@media screen and (min-width: 375px) {
  html {
    font-size: 37.5px;
  }
}
@media screen and (min-width: 384px) {
  html {
    font-size: 38.4px;
  }
}
@media screen and (min-width: 400px) {
  html {
    font-size: 40px;
  }
}
@media screen and (min-width: 414px) {
  html {
    font-size: 41.4px;
  }
}
@media screen and (min-width: 424px) {
  html {
    font-size: 42.4px;
  }
}
@media screen and (min-width: 480px) {
  html {
    font-size: 48px;
  }
}
@media screen and (min-width: 540px) {
  html {
    font-size: 54px;
  }
}
@media screen and (min-width: 720px) {
  html {
    font-size: 72px;
  }
}
@media screen and (min-width: 750px) {
  html {
    font-size: 75px;
  }
}
body {
  width: 10rem;
  margin: 0 auto;
}
h1 {
  text-align: center;
  font-size: 0.8rem;
}
.box {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-around;
}
.focus {
  width: 3rem;
  height: 8rem;
  background-color: #ccc;
  overflow: hidden;
  padding: 0 0.3rem;
  border: solid 1rem #fff;
  box-sizing: border-box;
  flex: 50%;
}
.focus img {
  display: block;
  width: 2.3rem;
  margin: 1rem auto;
  margin-bottom: 0;
}
.focus p {
  font-size: 0.3rem;
  text-align: center;
}
